Journal
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
Volume 55, Issue 12, Pages 1266-1281Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/03602559.2015.1132454
Keywords
Intrinsic properties; nanocomposite membranes; permeance; pervaporation; poly(vinyl alcohol)
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Funding
- Kerala State Council for Science, Technology and Environment (KSCSTE), Thiruvananthapuram, Kerala, India [ETP/107/2010/KSCSTE]
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In the present study, a novel poly(vinyl alcohol) membrane system was developed by a systematic approach for the pervaporation separation of water-isopropanol azeotropic mixtures. Poly(vinyl alcohol) with 5vol% cross-linked membranes showed water permeance of 4166 gpu with intrinsic selectivity 47. To further enhance the separation efficiency a hydrophilic nanofiller, bentonite nanoclay, is reinforced with cross-linked poly(vinyl alcohol) (5vol% glutraldehyde) membranes. The water permeance of the membranes increased to 8232 gpu, which is 100% more than that of cross-linked membranes. Membrane selectivity and the overall pervaporation performance also showed about 63 and 157% increment, respectively.
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